JPH0678873B2 - Heat pipe manufacturing method - Google Patents
Heat pipe manufacturing methodInfo
- Publication number
- JPH0678873B2 JPH0678873B2 JP60228524A JP22852485A JPH0678873B2 JP H0678873 B2 JPH0678873 B2 JP H0678873B2 JP 60228524 A JP60228524 A JP 60228524A JP 22852485 A JP22852485 A JP 22852485A JP H0678873 B2 JPH0678873 B2 JP H0678873B2
- Authority
- JP
- Japan
- Prior art keywords
- container
- working fluid
- nozzle
- condensable gas
- heat pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0283—Means for filling or sealing heat pipes
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Cleaning In General (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 この発明はヒートパイプを製造する方法に関し、特に非
凝縮性ガスを完全に排除した状態で作動流体をコンテナ
内に封入する方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a heat pipe, and more particularly to a method for enclosing a working fluid in a container while completely eliminating noncondensable gas.
従来の技術 周知のように、ヒートパイプは、密閉管などからならコ
ンテナの内部から空気などの非凝縮性のガスを完全に排
気した後に、水やアンモニアあるいはフロンＲ−12（商
品名）等の低沸点流体などの凝縮性流体を作動流体とし
て封入し、かつ金属網などの毛細管圧力を生じさせる多
孔構造体をウィックとしてコンテナの内部に挿入した構
成であり、外部からの入熱によって液相の作動流体が蒸
発気化するとともに、その蒸気が圧力の低い端部側に流
れた後、放熱して凝縮液化することにより、作動流体の
潜熱として熱輸送を行ない、また液相の作動流体をウィ
ックで生じる毛細管圧力によって熱発部に還流させるも
のである。このようなヒートパイプおける熱輸送は、液
相の作動流体が蒸発吸うことにより行なわれるのであ
り、そのためにはコンテナ内の空気等の非凝縮性ガスを
完全に排除して作動流体の蒸発を円滑化する必要があ
る。As is well known in the prior art, heat pipes, such as air, are completely exhausted from a container such as a sealed pipe, and then non-condensable gas such as water, ammonia, or Freon R-12 (trade name) is used. It has a structure in which a condensable fluid such as a low boiling point fluid is enclosed as a working fluid, and a porous structure that causes a capillary pressure such as a metal net is inserted as a wick inside the container. As the working fluid evaporates and vaporizes, its steam flows to the end side where the pressure is low, and then it radiates heat to condense and liquefy, thereby transferring heat as latent heat of the working fluid and wicking the working fluid in the liquid phase. The generated capillary pressure causes reflux to the heat generating part. The heat transfer in such a heat pipe is carried out by evaporating and sucking the working fluid in the liquid phase, and for that purpose, the non-condensable gas such as air in the container is completely removed to smoothly evaporate the working fluid. Need to be converted.
ところで従来、蒸気のような要請のある非凝縮性ガスの
排気および作動流体の注入は以下のようにして行なって
いる。すなわち油分など真空状態でガス発生する物質を
洗浄除去したコンテナに、真空ポンプと作動流体容器と
を、切換弁機構を介してそれぞれ接続しておき、先ず真
空ポンプを駆動してコンテナの内部から空気などの非凝
縮性ガスを吸引排気し、しかる後、作動流体容器から少
量の流体をコンテナの内部に送り込む所謂フラッシング
を行なってコンテナの内部から更に完全に非凝縮性ガス
を排除し、ついでコンテナの内部に規定量の作動流体を
注入し、注入完了後にコンテナに設けてある注入ノズル
を圧潰してコンテナを密閉している。By the way, conventionally, exhaustion of non-condensable gas such as steam and injection of working fluid have been performed as follows. That is, a vacuum pump and a working fluid container are connected to a container from which a substance that generates gas in a vacuum state such as oil is removed by washing, and the vacuum pump is first driven to remove air from the inside of the container. The non-condensable gas is sucked and exhausted, and then a small amount of fluid is sent from the working fluid container to the inside of the container, so-called flushing, to completely remove the non-condensable gas from the inside of the container. A prescribed amount of working fluid is injected into the interior, and after the injection is completed, the injection nozzle provided in the container is crushed to seal the container.
発明が解決しようとする問題点 しかるに前述したようにコンテナ内の微量の非凝縮性ガ
スが作動流体の蒸発気化を阻害して熱輸送特性に大きく
影響するが、従来では、前記ノズルの封止をもって非凝
縮性ガスの排気および作動流体の注入完了としていたた
め、作動流体に溶解混入しているO2やCO2等の溶存ガス
が加熱時に作動流体から分離されてコンテナ内に生じ、
これが非凝縮性ガスとなって熱輸送特性を低下させる問
題があった。Problems to be Solved by the Invention However, as described above, the trace amount of non-condensable gas in the container hinders the evaporation and vaporization of the working fluid and greatly affects the heat transport characteristics. Since exhaust of non-condensable gas and injection of working fluid were completed, dissolved gases such as O 2 and CO 2 dissolved and mixed in the working fluid are separated from the working fluid during heating and are generated in the container,
There is a problem that this becomes a non-condensable gas and deteriorates heat transport characteristics.
この発明は上記の事情に鑑み、コンテナ内の非凝縮性ガ
スを完全に排除して所期通りの熱輸送特性を示すヒート
パイプを得ることのできる方法を提供することを目的と
するものである。In view of the above circumstances, an object of the present invention is to provide a method capable of completely eliminating non-condensable gas in a container to obtain a heat pipe exhibiting heat transfer characteristics as expected. .
問題点を解決するための手段 この発明は、上記の目的を達成するために、作動流体を
封入するコンテナに作動流体の注入／封止用の細管から
なるノズルを設けておき、そのノズルを介して前記コン
テナ内の非凝縮性ガスを一旦真空排気した後、前記コン
テナの内部に、前記ノズルを介して作動流体を注入する
とともに、前記ノズルをコンテナから所定長さの突出部
を残して仮封止し、ついでそのコンテナを加熱してその
内部の作動流体を蒸発気化させることによりコンテナ内
の非凝縮性ガスをノズルの内部に入り込ませ、しかる後
前記ノズルをコンテナ側の基端部で本封止することによ
り、コンテナ内から非凝縮性ガスを除去することを特徴
とする方法である。Means for Solving the Problems In order to achieve the above object, the present invention provides a container for enclosing a working fluid with a nozzle made of a thin tube for injecting / sealing the working fluid, and via the nozzle. Once the non-condensable gas in the container has been evacuated, the working fluid is injected into the container through the nozzle, and the nozzle is temporarily sealed from the container leaving a protrusion of a predetermined length. Then, by heating the container and evaporating the working fluid inside the container, the non-condensable gas in the container is allowed to enter the inside of the nozzle, and then the nozzle is fully sealed at the base end on the container side. It is a method characterized by removing the non-condensable gas from the inside of the container by stopping.
作用 この発明において、作動流体の注入までの操作は、従来
と同様にして行なわれる。すなわち予め洗浄したコンテ
ナの内部から空気等の非凝縮性ガスを例えば真空ポンプ
によって吸引排気し、そのコンテナの内部に少量の作動
流体を吹き込むフラッシングを行なって更に非凝縮性ガ
スを排除した後に規定量の作動流体をコンテナに注入す
る。そしてこの発明では、このような排気および注入を
行なうためにコンテナに細管からなるノズルを設けてお
き、作動流体の注入の後にそのノズルをコンテナから所
定長さを残して仮封止する。この状態ではコンテナの内
部には、実質上作動流体のみが存在することになる。つ
いでコンテナを所定の温度まで加熱して作動流体を蒸発
気化させると、作動流体に溶解していたO2やCO2などの
ガスが作動流体から分離し、あるいはコンテナ内面の付
着物の熱分解によりガスが発生する。これらの非凝縮性
のガスは作動流体が更に蒸発気化することにより、コン
テナから突出した状態に残っているノズルの内部に入り
込み、ここに充満する。このようにしてコンテナの加熱
を所定時間行なった後に、前記ノズルのコンテナ側の基
端部を本封止し、その内部の非凝縮性ガスをコンテナの
内部から隔絶して排除する。その結果、作動流体の蒸発
および凝縮が生じるコンテナ内から非凝縮性ガスが完全
に排除される。Operation In the present invention, the operation up to the injection of the working fluid is performed in the same manner as the conventional one. That is, a non-condensable gas such as air is sucked and exhausted from the inside of a previously washed container by, for example, a vacuum pump, and a small amount of working fluid is blown into the container to flush the non-condensable gas to remove the non-condensable gas. Pour working fluid into the container. In the present invention, a nozzle made of a thin tube is provided in the container in order to perform such exhaust and injection, and after injection of the working fluid, the nozzle is temporarily sealed from the container leaving a predetermined length. In this state, substantially only the working fluid exists inside the container. Then, when the container is heated to a predetermined temperature to evaporate the working fluid, gases such as O 2 and CO 2 dissolved in the working fluid are separated from the working fluid, or due to thermal decomposition of the deposits on the inner surface of the container. Gas is generated. These non-condensable gases enter and fill the inside of the nozzle that remains protruding from the container due to further vaporization of the working fluid. After heating the container for a predetermined time in this way, the base end of the nozzle on the container side is permanently sealed, and the non-condensable gas inside the nozzle is isolated and removed from the inside of the container. As a result, non-condensable gases are completely excluded from the container where evaporation and condensation of the working fluid occurs.
実施例 以下、この発明を実施例に基づいて具体的に説明する。EXAMPLES Hereinafter, the present invention will be specifically described based on Examples.
先ず、この発明における作動流体の注入操作は従来とほ
ぼ同様であって、第１図に示すようにして行なう。すな
わち予め洗浄しかつウィックを挿入したコンテナ（密閉
管）１の一端部に、細管からならノズル２を接続して取
付けておき、そのノズル２にバルブ３を介してＴ字状の
ゴム管４を接続し、そのゴム管４の一方の端部にバルブ
５を介して作動流体容器６を接続し、またゴム管４の他
方の端部にバルブ７を介して真空ポンプ８を接続する。
そして容器６側のバルブ５を閉じるとともに、他のバル
ブ3,7を開いた状態で真空ポンプ８を起動してコンテナ
１の内部から空気等の非凝縮性ガスを真空排気し、つい
で真空ポンプ８側のバルブ７を閉じるとともに、容器６
側のバルブ５を開いて作動流体をコンテナ１に注入す
る。その場合、少量の作動流体をコンテナ１内に送り込
んだ後、容器６側のバルブ５を閉じかつ真空ポンプ８側
のバルブ７を開いた状態で、コンテナ１を加熱して作動
流体を蒸発させ、もって非凝縮性ガスを作動流体蒸発と
共に排出する所謂フラッシングを適宜に行なってもよ
い。First, the operation of injecting the working fluid in the present invention is almost the same as the conventional one, and is performed as shown in FIG. That is, a nozzle 2 is connected and attached to one end of a container (sealed tube) 1 that has been cleaned and a wick is inserted, and a T-shaped rubber tube 4 is attached to the nozzle 2 via a valve 3. The rubber pipe 4 is connected to one end of the rubber pipe 4 with the working fluid container 6 via the valve 5, and the other end of the rubber pipe 4 is connected to the vacuum pump 8 via the valve 7.
Then, while the valve 5 on the container 6 side is closed and the other valves 3 and 7 are opened, the vacuum pump 8 is started to evacuate non-condensable gas such as air from the inside of the container 1 and then the vacuum pump 8 Close the valve 7 on the
The valve 5 on the side is opened to inject the working fluid into the container 1. In that case, after feeding a small amount of working fluid into the container 1, with the valve 5 on the container 6 side closed and the valve 7 on the vacuum pump 8 side open, the container 1 is heated to evaporate the working fluid, Therefore, so-called flushing for discharging the non-condensable gas together with the evaporation of the working fluid may be appropriately performed.
このようにして作動流体の注入を行なった後、全てのバ
ルブ3,5,7を閉じた状態で、第２図に示すように、ノズ
ル２をその先端部で、すなわちコンテナ１側の基端部か
ら所定の長さの突出部を残して圧潰し、仮封止する。After injecting the working fluid in this way, with all the valves 3, 5, 7 closed, as shown in FIG. 2, the nozzle 2 is at its tip, that is, the base end on the container 1 side. The part is crushed by leaving a protruding part of a predetermined length and temporarily sealed.
次に、コンテナ１の下端部を第３図に示すように適宜の
加熱媒体９に浸漬し、コンテナ１内の作動流体10を蒸発
気化させる。その加熱は一例として、水を作動流体とし
た場合には、200℃で１〜２時間で充分である。その結
果、作動流体10に溶存していたO2やCO2などのガス、あ
るいはコンテナ１の内面に付着していた物質の分解ガス
が生じるが、これらの非凝縮性ガス11は作動流体蒸気12
によって上方に押し流されてノズル２の内部に押し込め
られる。Next, the lower end of the container 1 is dipped in an appropriate heating medium 9 as shown in FIG. 3 to evaporate the working fluid 10 in the container 1 to vaporize it. For example, when water is used as the working fluid, heating at 200 ° C. for 1 to 2 hours is sufficient. As a result, a gas such as O 2 or CO 2 dissolved in the working fluid 10 or a decomposition gas of a substance attached to the inner surface of the container 1 is generated, but these non-condensable gases 11 are the working fluid vapor 12
Is forced to flow upward and is pushed into the inside of the nozzle 2.
そして上記のようにして非凝縮性ガス11をノズル２の内
部に入り込ませた状態で第４図に示すようにノズル２の
基端部を圧潰し、本封止を行なう。Then, in the state where the non-condensable gas 11 has entered the inside of the nozzle 2 as described above, the base end portion of the nozzle 2 is crushed as shown in FIG.
すなわちこの発明の方法では、ヒートパイプを初めて動
作させたときに生じる非凝縮性ガス11を、ノズル２の内
部に封じ込めてコンテナ１の内部から除去する。That is, in the method of the present invention, the non-condensable gas 11 generated when the heat pipe is operated for the first time is confined inside the nozzle 2 and removed from the inside of the container 1.
なお、この発明の方法を実施する場合、作動流体の種類
やその量によって非凝縮性流体の発生量がほぼ決まるの
で、ノズルの長さや太さは、用いる作動流体の種類およ
び量によって決定すればよい。When the method of the present invention is carried out, the generation amount of the non-condensable fluid is substantially determined by the type and amount of the working fluid, so the length and thickness of the nozzle can be determined by the type and amount of the working fluid used. Good.
発明の効果 以上の説明から明らかなようにこの発明の方法によれ
ば、作動流体を注入後、初めて加熱入熱した際に生じる
非凝縮性ガスを、作動流体の注入に使用したノズルの内
部に封じ込めてコンテナの内部から除去することができ
るので、作動流体の蒸発が阻害されることのない熱輸送
特性の優れたヒートパイプを得ることができる。なおこ
の発明の方法では、作動流体の注入前の最初の段階でコ
ンテナ内に存在していた空気等の非凝縮性ガスは、初期
の真空排気によって排出される。すなわち本願発明の方
法は、飽くまで真空置換法を前提としているから、従来
の一般的な蒸発法の場合の如くコンテナ内の作動流体量
が不正確となるようこともない。EFFECTS OF THE INVENTION As is clear from the above description, according to the method of the present invention, the non-condensable gas generated when the heat is first applied to the working fluid after the working fluid is injected into the nozzle used for injecting the working fluid. Since it can be contained and removed from the inside of the container, it is possible to obtain a heat pipe having excellent heat transport characteristics without impeding the evaporation of the working fluid. In the method of the present invention, the non-condensable gas such as air existing in the container at the first stage before the injection of the working fluid is discharged by the initial vacuum exhaust. That is, since the method of the present invention is based on the vacuum displacement method until it gets tired, the amount of working fluid in the container does not become inaccurate as in the case of the conventional general evaporation method.
第１図ないし第４図はこの発明の方法によるヒートパイ
プの製造過程を示す略解図であって、第１図は作動流体
の注入過程、第２図はノズルの仮封止過程、第３図は加
熱過程、第４図はノズルの本封止過程をそれぞれ示す。 １…コンテナ、２…ノズル、10…作動流体、11…非凝縮
性ガス、12…作動流体蒸気。1 to 4 are schematic views showing a process of manufacturing a heat pipe according to the method of the present invention. FIG. 1 is a process of injecting a working fluid, FIG. 2 is a process of temporarily sealing a nozzle, and FIG. Shows a heating process, and FIG. 4 shows a main sealing process of the nozzle. 1 ... Container, 2 ... Nozzle, 10 ... Working fluid, 11 ... Non-condensable gas, 12 ... Working fluid vapor.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 望月 正孝 東京都江東区木場１丁目５番１号 藤倉電 線株式会社内 (72)発明者 伊藤 雅彦 東京都江東区木場１丁目５番１号 藤倉電 線株式会社内 (56)参考文献 特開 昭59−119187（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masataka Mochizuki 1-5-1, Kiba, Koto-ku, Tokyo Fujikura Electric Wire Co., Ltd. (72) Masahiko Ito 1-1-5, Kiba, Koto-ku, Tokyo Fujikura Electric Wire Co., Ltd. (56) References JP-A-59-119187 (JP, A)
Claims (1)
注入／封止用の細管からなるノズルを設けておき、その
ノズルを介して前記コンテナ内の非凝縮性ガスを一旦真
空排気した後、前記コンテナの内部に、前記ノズルを介
して作動流体を注入するとともに、前記ノズルをコンテ
ナから所定の長さの突出部を残して仮封止し、ついでそ
のコンテナを加熱してその内部の作動流体を蒸発気化さ
せることによりコンテナ内の非凝縮性ガスをノズルの内
部に入り込ませ、しかる後前記ノズルをコンテナ側の基
端部で本封止することにより、コンテナ内から非凝縮性
ガスを除去することを特徴とするヒートパイプの製造方
法。1. A container for enclosing a working fluid is provided with a nozzle made of a thin tube for injecting / sealing the working fluid, and the non-condensable gas in the container is once evacuated through the nozzle, Working fluid is injected into the inside of the container through the nozzle, and the nozzle is temporarily sealed from the container leaving a protrusion of a predetermined length, and then the container is heated to produce the working fluid inside. The non-condensable gas in the container is caused to enter the inside of the nozzle by evaporating and vaporizing the non-condensable gas from the inside of the container by finally sealing the nozzle at the base end on the container side. A method for manufacturing a heat pipe, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60228524A JPH0678873B2 (en) | 1985-10-14 | 1985-10-14 | Heat pipe manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60228524A JPH0678873B2 (en) | 1985-10-14 | 1985-10-14 | Heat pipe manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6287788A JPS6287788A (en) | 1987-04-22 |
| JPH0678873B2 true JPH0678873B2 (en) | 1994-10-05 |
Family
ID=16877766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60228524A Expired - Lifetime JPH0678873B2 (en) | 1985-10-14 | 1985-10-14 | Heat pipe manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0678873B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05332689A (en) * | 1992-06-04 | 1993-12-14 | Mitsubishi Cable Ind Ltd | Manufacture of heat pipe |
| WO2005024331A1 (en) * | 2003-09-02 | 2005-03-17 | Sharp Kabushiki Kaisha | Loop type thermo siphon, stirling cooling chamber, and cooling apparatus |
| JP2007024424A (en) * | 2005-07-19 | 2007-02-01 | Denso Corp | Exhaust heat recovery apparatus and refrigerant filling method of exhaust heat recovery apparatus |
| CN110017714B (en) * | 2019-04-17 | 2020-01-24 | 中国矿业大学 | A low-temperature gravity heat pipe using carbon dioxide as a working medium and its filling method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59119187A (en) * | 1982-12-27 | 1984-07-10 | Akutoronikusu Kk | Heat pipe and manufacture thereof |
-
1985
- 1985-10-14 JP JP60228524A patent/JPH0678873B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6287788A (en) | 1987-04-22 |
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